NYC 9/11 Public Portal Document
TEM Asbestos (air) Count Sheet
Client Name: NYC BOE Volume (liters): 1840
Lab Group #: 7381 Filter Type / Filter Area: MCE 385 mm-
Lab Sample #: 4 Grid Opening Size: 0.01124
Client Sample #: 04 Area Examined: 0.04496 mm-
GRID BOX: Magnification: 20,000
GRIDID: //Vy'- Accelerating Voltage: 100 KeV
# Grid Openings: 4 Analysis Date: 4/11/02
Analysis Performed By: Zvv
ROMAN PEYSAKHOV
GO. Structure Structure Type Length ID of Structure Norv EDS
No (Nonadb
F B C M >=05 p : '=5(J Chrys Amphibole Nonasb Ambig/ND
V No Coord <5m Elements)
------------ 1
_ L_
_jZ—
n
Struct “ > 0.5n > 5:1 Aspect Ratio Grid acceptance:
\' = Positive diffraction pattern properties conforming to <50% undissolved filter, overlapped or folded Totals
laborator/ identification criteria observed <10% particulate coverage >50% coverage ate
least 20 unfolded or overlapped gnd squares <5% F B C I M I >5p
\i = EDS spectrum conforming to laboratory holes or opaque areas
identification cnteria observed Chrysotile I
AMPHIBOLES Amphibole
F = Single Fiber Amosite
B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous
C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos
M = Matrix
Tremolite
Actinolite Non-Identified i
NSC = No Structures Detected I
CONFIDENTIAL, CITY_21MC100_003470976
SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008
NYC-WTC_000176862
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